Vibration damper



FIG. 1 is an isometric top right view of the new design.

FIG. 2 is an isometric bottom right view of the new design.

FIG. 3 is a front view of the new design; and,

FIG. 4 is a side view of the new design.

Design is symmetrical front and back, top and bottom. Omitted are the back view and opposite side view. 

CLAIM The ornamental design for a vibration damper, substantially as shown and described in FIGS. 1-4. 